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<h1>㎡</h1>
<h1>1.2<sup>n</sup></h1>

<table style="margin-right: 1px" cellspacing="-1" cellpadding="-1">
    <tbody>
        <tr>
            <td style="font-size: 0">
                <div>
                    <div style="background: url('http://img.jyeoo.net/images/formula/part/123U.png') no-repeat; width:9px; height:6px;overflow:hidden"></div>
                    <div style="background: url(&quot;http://img.jyeoo.net/images/formula/part/123M.png&quot;) repeat-y; width: 9px; height: 21.5px; overflow: hidden;" muststretch="v"></div>
                    <div style="background: url('http://img.jyeoo.net/images/formula/part/123L.png') no-repeat; width:9px; height:9px;overflow:hidden"></div>
                    <div style="background: url(&quot;http://img.jyeoo.net/images/formula/part/123M.png&quot;) repeat-y; width: 9px; height: 21.5px; overflow: hidden;" muststretch="v"></div>
                    <div style="background: url('http://img.jyeoo.net/images/formula/part/123D.png') no-repeat; width:9px; height:6px;overflow:hidden"></div>
                </div>
            </td>
            <td>
                <table style="text-align: left; width: 100%; margin-left: 1px; margin-right: 1px" cellspacing="-1" cellpadding="-1">
                    <tbody>
                        <tr>
                            <td>∠<font class="MathJye_mi">B</font>∠<font class="MathJye_mi">G</font><font class="MathJye_mi">C</font><font class="MathJye_mi">H</font>
                            </td>
                        </tr>
                        <tr>
                            <td style="padding-top:6px">
                                <font class="MathJye_mi">B</font><font class="MathJye_mi">E</font>＝∠<font class="MathJye_mi">C</font><font class="MathJye_mi">G</font><font class="MathJye_mi">H</font>
                            </td>
                        </tr>
                        <tr>
                            <td style="padding-top:6px">
                                <font class="MathJye_mi">B</font><font class="MathJye_mi">G</font>＝<font class="MathJye_mi">G</font>
                            </td>
                        </tr>
                    </tbody>
                </table>
            </td>
            <td style="font-size: 0"></td>
        </tr>
    </tbody>
</table>

<div class="pt6"><!--B6--><em>【解答】</em>解：S△AB=<span class="MathJye" mathtag="math" style="whiteSpace:nowrap;wordSpacing:normal;wordWrap:normal"><table cellpadding="-1" cellspacing="-1" style="margin-right:1px"><tbody><tr><td style="border-bottom:1px solid black">1</td></tr><tr><td>2</td></tr></tbody></table></span>×2×=2．<br>图所示，A′B′=B=<span dealflag="1" class="MathJye" mathtag="math" style="whiteSpace:nowrap;wordSpacing:normal;wordWrap:normal"><table cellspacing="-1" cellpadding="-1"><tbody><tr><td style="font-size: 0px"><div hassize="7"><div style="width: 6px; background: url(&quot;http://img.jyeoo.net/images/formula/part/8730U.png&quot;) repeat-y; height: 16px; overflow: hidden;" muststretch="v"></div><div style="width:6px;background: url('http://img.jyeoo.net/images/formula/part/8730D.png') no-repeat; height: 7px; overflow: hidden"></div></div></td><td style="padding:0;padding-left: 2px; border-top: black 1px solid;line-height:normal;padding-top:1px"><span><span>1</span><span style="vertical-align:super;font-size:90%">2</span></span>+<span><span>2</span><span style="vertical-align:super;font-size:90%">2</span></span></td></tr></tbody></table></span>=<span dealflag="1" class="MathJye" mathtag="math" style="whiteSpace:nowrap;wordSpacing:normal;wordWrap:normal"><table cellspacing="-1" cellpadding="-1"><tbody><tr><td style="font-size: 0px"><div hassize="7"><div style="width: 6px; background: url(&quot;http://img.jyeoo.net/images/formula/part/8730U.png&quot;) repeat-y; height: 11px; overflow: hidden;" muststretch="v"></div><div style="width:6px;background: url('http://img.jyeoo.net/images/formula/part/8730D.png') no-repeat; height: 7px; overflow: hidden"></div></div></td><td style="padding:0;padding-left: 2px; border-top: black 1px solid;line-height:normal">5</td></tr></tbody></table></span>．<br><img alt="菁优网" src="http://img.jyeoo.net/quiz/images/201605/37/7803cdc7.png" style="vertical-align:middle"><br>答案为：<span dealflag="1" class="MathJye" mathtag="math" style="whiteSpace:nowrap;wordSpacing:normal;wordWrap:normal"><table cellspacing="-1" cellpadding="-1"><tbody><tr><td style="font-size: 0px"><div hassize="7"><div style="width: 6px; background: url(&quot;http://img.jyeoo.net/images/formula/part/8730U.png&quot;) repeat-y; height: 11px; overflow: hidden;" muststretch="v"></div><div style="width:6px;background: url('http://img.jyeoo.net/images/formula/part/8730D.png') no-repeat; height: 7px; overflow: hidden"></div></div></td><td style="padding:0;padding-left: 2px; border-top: black 1px solid;line-height:normal">5</td></tr></tbody></table></span>．<!--E6-->
</div>

<div class="questem-inner bdjson">
    <p><span>17.（12分）</span></p>
    <p>
        <span>△</span><span class="ext_italic">ABC</span><span>的内角</span><span class="ext_italic">A</span><span>，</span><span class="ext_italic">B</span><span>，</span><span class="ext_italic">C</span><span>的对边分别为</span><span class="ext_italic">a</span><span>，</span><span class="ext_italic">b</span><span>，</span><span class="ext_italic">c</span><span>，已知△</span><span class="ext_italic">ABC</span><span>的面积为</span><img width="48px" height="43px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/29381f30e924b89971bf766864061d950b7bf6db.jpg">
    </p>
    <p>
        <span>（1）求sin</span><span class="ext_italic">B</span><span>sin</span><span class="ext_italic">C</span><span>;</span>
    </p>
    <p>
        <span>（2）若6cos</span><span class="ext_italic">B</span><span>cos</span><span class="ext_italic">C</span><span>=1,</span><span class="ext_italic">a</span><span>=3,求△</span><span class="ext_italic">ABC</span><span>的周长</span>
    </p>
</div>

<div class="questem-inner bdjson">
    <p>
        <span>18.（12分）如图，在四棱锥</span><span class="ext_italic">P-ABCD</span><span>中，</span><span class="ext_italic">AB//CD</span><span>，且</span><img width="143px" height="20px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/78310a55b319ebc40f6d79c98826cffc1e17164c.jpg">
    </p>
    <p>
        <img width="168px" height="115px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/d0c8a786c9177f3e1f77f35d7acf3bc79f3d561a.jpg">
    </p>
    <p>
        <span>(1)证明：平面</span><span class="ext_italic">PAB</span><span>⊥平面</span><span class="ext_italic">PAD</span><span>；</span>
    </p>
    <p><span>(2)若</span><span class="ext_italic">PA</span><span>=</span><span class="ext_italic">PD</span><span>=</span><span class="ext_italic">AB</span><span>=</span><span class="ext_italic">DC</span><span>,</span><img width="83px" height="20px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/0b55b319ebc4b745fa81b846c5fc1e178a82154c.jpg"><span>,求二面角</span><span class="ext_italic">A</span><span>-</span><span class="ext_italic">PB</span><span>-</span><span class="ext_italic">C</span><span>的余弦值.</span>
    </p>
</div>

<div class="questem-inner bdjson">
    <p><span>19.（12分）为了监控某种零件的一条生产线的生产过程，检验员每天从该生产线上随机抽取16个零件，并测量其尺寸（单位：cm）．根据长期生产经验，可以认为这条生产线正常状态下生产的零件的尺寸服从正态分布</span><span class="ext_italic">N</span><span>(</span><span class="ext_italic">μ</span><span>,</span><span class="ext_italic">σ</span><span class="ext_valign_sup">2</span><span>)．</span>
    </p>
    <p>
        <span>（1）假设生产状态正常，记</span><span class="ext_italic">X</span><span>表示一天内抽取的16个零件中其尺寸在(</span><span class="ext_italic">μ</span><span>–3</span><span class="ext_italic">σ</span><span>,</span><span class="ext_italic">μ</span><span>+3</span><span class="ext_italic">σ</span><span>)之外的零件数，求</span><span class="ext_italic">P</span><span>(</span><span class="ext_italic">X</span><span>≥1)及</span><span class="ext_italic">X</span><span>的数学期望；</span>
    </p>
    <p>
        <span>（2）一天内抽检零件中，如果出现了尺寸在(</span><span class="ext_italic">μ</span><span>–3</span><span class="ext_italic">σ</span><span>,</span><span class="ext_italic">μ</span><span>+3</span><span class="ext_italic">σ</span><span>)之外的零件，就认为这条生产线在这一天的生产过程可能出现了异常情况，需对当天的生产过程进行检查．</span>
    </p>
    <p><span>（ⅰ）试说明上述监控生产过程方法的合理性；</span></p>
    <p><span>（ⅱ）下面是检验员在一天内抽取的16个零件的尺寸：</span></p>
    <p>
        <img width="397px" height="72px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/6609c93d70cf3bc7e343c2bcdb00baa1cd112a1a.jpg">
    </p>
    <p>
        <span>经计算得</span><img width="124px" height="45px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/0bd162d9f2d3572cf261938c8013632763d0c3db.jpg"><span>，</span><img width="326px" height="51px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/8326cffc1e178a82072970f0fc03738da977e84d.jpg"><span>，其中</span><span class="ext_italic">x</span><span class="ext_italic ext_valign_sub">i</span><span>为抽取的第</span><span class="ext_italic">i</span><span>个零件的尺寸，</span><span class="ext_italic">i</span><span>=1,2,…,16．</span>
    </p>
    <p>
        <span>用样本平均数</span><img width="14px" height="17px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/8601a18b87d6277f4c113d6822381f30e924fc5b.jpg"><span>作为</span><span class="ext_italic">μ</span><span>的估计值</span><img width="15px" height="20px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/1f178a82b9014a90362b49eda3773912b31bee4d.jpg"><span>，用样本标准差</span><span class="ext_italic">s</span><span>作为</span><span class="ext_italic">σ</span><span>的估计值</span><img width="15px" height="19px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/8b13632762d0f70378319a8c02fa513d2797c5db.jpg"><span>，利用估计值判断是否需对当天的生产过程进行检查？剔除</span><img width="108px" height="20px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/b8014a90f603738d6b5f0372b91bb051f819ec4d.jpg"><span>之外的数据，用剩下的数据估计</span><span class="ext_italic">μ</span><span>和</span><span class="ext_italic">σ</span><span>（精确到0.01）．</span>
    </p>
    <p>
        <span>附：若随机变量</span><span class="ext_italic">Z</span><span>服从正态分布</span><span class="ext_italic">N</span><span>(</span><span class="ext_italic">μ</span><span>,</span><span class="ext_italic">σ</span><span class="ext_valign_sup">2</span><span>)，则</span><span class="ext_italic">P</span><span>(</span><span class="ext_italic">μ</span><span>–3</span><span class="ext_italic">σ</span><span>&lt;</span><span class="ext_italic">Z</span><span>&lt;</span><span class="ext_italic">μ</span><span>+3</span><span class="ext_italic">σ</span><span>)=0.997 4，0.997 4</span><span class="ext_valign_sup">16</span><span>≈0.959 2，</span><img width="96px" height="24px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/cc11728b4710b9124c82f9aec9fdfc039245221a.jpg"><span>．</span>
    </p>
</div>

<div class="questem-inner bdjson">
    <p><span>22. 选考题：共10分。请考生在第22、23题中任选一题作答，如果多做，则按所做的第一题计分。</span></p>
    <p><span>[选修4-4，坐标系与参数方程]（10分）</span></p>
    <p>
        <span>在直角坐标系xOy中，曲线C的参数方程为</span><img width="72px" height="43px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/0824ab18972bd407a884dcad71899e510fb3091a.jpg"><span>（</span><span class="ext_italic">θ</span><span>为参数），直线l的参数方程为</span><img width="133px" height="43px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/7af40ad162d9f2d3b5042bbfa3ec8a136327cc4d.jpg"><span>.</span>
    </p>
    <p><span>（1）若a=-1，求C与l的交点坐标；</span></p>
    <p>
        <span>（2）若C上的点到l的距离的最大值为</span><img width="28px" height="20px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/f7246b600c338744ed47202c5b0fd9f9d62aa0db.jpg"><span>，求a.</span>
    </p>
</div>

<div class="question-box-inner">
    <span class="queindex-wrap"><span class="queindex">2</span></span>

    <div class="que-stem">
        <div class="questem-inner bdjson">
            <p><span>2．下列有关化学用语表示正确的是 （&nbsp;&nbsp;&nbsp;&nbsp; ）</span></p>
        </div>
    </div>
    <div class="que-options">
        <div class="queoptions-inner bdjson clearfix">
            <div class="opt-item" style="display: block;">
                <p>
                    <span class="prefix">A</span><span>质量数为31的磷原子: </span><span class="ext_valign_sup">31</span><span class="ext_valign_sub">15</span><span>P</span>
                </p>
            </div>
            <div class="opt-item" style="display: block;">
                <p>
                    <span class="prefix">B</span><span>氟原子的结构示意图: </span><img width="33px" height="28px" class="scale-img" src="http://hiphotos.baidu.com/baidu/pic/item/f9198618367adab4954b0b0881d4b31c8601e4e6.jpg">
                </p>
            </div>
            <div class="opt-item" style="display: block;">
                <p>
                    <span class="prefix">C</span><span>CaCl</span><span class="ext_valign_sub">2</span><span>的电子式: </span><img width="63px" height="21px" class="scale-img" src="http://hiphotos.baidu.com/baidu/pic/item/bba1cd11728b47102175ed87c9cec3fdfc032326.jpg">
                </p>
            </div>
            <div class="opt-item" style="display: block;">
                <p>
                    <span class="prefix">D</span><span>明矾的化学式: Al</span><span class="ext_valign_sub">2</span><span>(SO</span><span class="ext_valign_sub">4</span><span>)</span><span class="ext_valign_sub">3</span>
                </p>
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<div class="analyse-content" style="transform: translate3d(0px, 0px, 0px);">
    <div class="que-title-wrap">
        <div class="title">
            <span class="content-wrap"> <span class="dt-index">4</span> <span class="content"> <span style="display:  none "> 第(0)小题</span>正确答案及相关解析 </span> </span>
        </div>
        <hr style="display:  none ">
    </div>
    <div class="exam-answer">
        <h3 class="exam-answer-title">正确答案</h3>
        <div class="answer-item">
            <div class="content exam-answer-content bdjson"><span>B</span></div>
        </div>
    </div>
    <div class="exam-analysis exam-info">
        <h3 class="exam-analysis-title"><span class="ic analysis-ic">解析</span></h3>
        <div class="content exam-analysis-content bdjson">
            <p><span>选项A铜和稀硫酸不反应，故A错误</span></p>
            <p><span>选项B二氧化硫可使品红溶液褪色，故B正确</span></p>
            <p><span>选项C二氧化硫密度比空气大，应将进气管伸到瓶底，用向上排空气法收集，故C错误</span></p>
            <p><span>选项D二氧化硫在饱和亚硫酸氢钠溶液中溶解度很小，不可用于吸收尾气，故D错误</span></p>
            <p><span>故选B。</span></p>
        </div>
    </div>
    <div class="exam-direction exam-info">
        <h3 class="exam-direction-title"><span class="ic direction-ic">考查方向</span></h3>
        <div class="content exam-direction-content bdjson"> 二氧化硫的化学性质</div>
    </div>
    <div class="exam-skill exam-info">
        <h3 class="exam-skill-title"><span class="ic skill-ic">解题思路</span></h3>
        <div class="content exam-skill-content bdjson">
            <p><span>选项A铜和稀硫酸不反应</span></p>
            <p><span>选项B二氧化硫可使品红溶液褪色</span></p>
            <p><span>选项C二氧化硫密度比空气大</span></p>
            <p><span>选项D二氧化硫在饱和亚硫酸氢钠溶液中溶解度很小</span></p>
        </div>
    </div>
    <div class="exam-errorpoint exam-info">
        <h3 class="exam-errorpoint-title"><span class="ic errorpoint-ic">易错点</span></h3>
        <div class="content exam-errortip-content bdjson">
            <p><span>不能用亚硫酸氢钠吸收二氧化硫</span></p>
        </div>
    </div>
</div>

<div class="question-box-inner">
    <span class="queindex-wrap"><span class="queindex">6</span></span>

    <div class="que-stem">
        <div class="questem-inner bdjson">
            <p><span>6．下列指定反应的离子方程式正确的是 （&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ）</span></p>
        </div>
    </div>
    <div class="que-options">
        <div class="queoptions-inner bdjson clearfix">
            <div class="opt-item" style="display: block;">
                <p>
                    <span class="prefix">A</span><span>钠与水反应: Na +2H</span><span class="ext_valign_sub">2</span><span>O</span><img width="35px" height="13px" class="scale-img" src="http://hiphotos.baidu.com/baidu/pic/item/dbb44aed2e738bd451baa27aab8b87d6267ff9e6.jpg"><span>Na</span><span class="ext_valign_sup">+</span><span>+2OH</span><span class="ext_valign_sup">–</span><span> + H</span><span class="ext_valign_sub">2</span><span>↑</span>
                </p>
            </div>
            <div class="opt-item" style="display: block;">
                <p>
                    <span class="prefix">B</span><span>电解饱和食盐水获取烧碱和氯气: 2Cl</span><span class="ext_valign_sup">–</span><span>+2H</span><span class="ext_valign_sub">2</span><span>O</span><img width="49px" height="31px" class="scale-img" src="http://hiphotos.baidu.com/baidu/pic/item/4610b912c8fcc3ce589ad9789845d688d43f2026.jpg"><span>H</span><span class="ext_valign_sub">2</span><span>↑+ Cl</span><span class="ext_valign_sub">2</span><span>↑+2OH</span><span class="ext_valign_sup">–</span>
                </p>
            </div>
            <div class="opt-item" style="display: block;">
                <p>
                    <span class="prefix">C</span><span>向氢氧化钡溶液中加入稀硫酸: Ba</span><span class="ext_valign_sup">2+</span><span>+OH</span><span class="ext_valign_sup">–</span><span> + H</span><span class="ext_valign_sup">+</span><span> + </span><img width="33px" height="25px" class="scale-img" src="http://hiphotos.baidu.com/baidu/pic/item/54fbb2fb43166d2246a905df4c2309f79152d29a.jpg"><img width="35px" height="13px" class="scale-img" src="http://hiphotos.baidu.com/baidu/pic/item/b3fb43166d224f4a2a47635803f790529922d19a.jpg"><span>BaSO</span><span class="ext_valign_sub">4</span><span>↓+H</span><span class="ext_valign_sub">2</span><span>O</span>
                </p>
            </div>
            <div class="opt-item" style="display: block;">
                <p>
                    <span class="prefix">D</span><span>向碳酸氢铵溶液中加入足量石灰水: Ca</span><span class="ext_valign_sup">2+</span><span>+</span><img width="41px" height="25px" class="scale-img" src="http://hiphotos.baidu.com/baidu/pic/item/42166d224f4a20a44dc02c8c9a529822730ed09a.jpg"><span>+OH</span><span class="ext_valign_sup">–</span><img width="35px" height="13px" class="scale-img" src="http://hiphotos.baidu.com/baidu/pic/item/4e4a20a4462309f79db1bd59780e0cf3d6cad69a.jpg"><span>CaCO</span><span class="ext_valign_sub">3</span><span>↓+H</span><span class="ext_valign_sub">2</span><span>O</span>
                </p>
            </div>
        </div>
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    <span class="queindex-wrap"><span class="queindex">16</span></span>

    <div class="que-stem">
        <div class="questem-inner bdjson">
            <p>
                <span>16．(12分)铝是应用广泛的金属。以铝土矿(主要成分为Al</span><span class="ext_valign_sub">2</span><span>O</span><span class="ext_valign_sub">3</span><span>，含SiO</span><span class="ext_valign_sub">2</span><span>和Fe</span><span class="ext_valign_sub">2</span><span>O</span><span class="ext_valign_sub">3</span><span>等杂质)为原料制备铝的一种工艺流程如下:</span>
            </p>
            <p>
                <img width="551px" height="146px" class="scale-img" src="http://hiphotos.baidu.com/baidu/pic/item/fcfaaf51f3deb48fefb7b195fa1f3a292cf5789a.jpg">
            </p>
            <p><span>注:SiO</span><span class="ext_valign_sub">2</span><span>在“碱溶”时转化为铝硅酸钠沉淀。</span></p>
            <p><span>（1）“碱溶”时生成偏铝酸钠的离子方程式为_____________________。</span></p>
            <p>
                <span>（2）向“过滤Ⅰ”所得滤液中加入NaHCO</span><span class="ext_valign_sub">3</span><span>溶液，溶液的pH_________ (填“增大”、“不变”或“减小”)。</span>
            </p>
            <p>
                <span>（3）“电解Ⅰ”是电解熔融 Al</span><span class="ext_valign_sub">2</span><span>O</span><span class="ext_valign_sub">3</span><span>，电解过程中作阳极的石墨易消耗，原因是___________。</span>
            </p>
            <p>
                <span>（4）“电解Ⅱ”是电解Na</span><span class="ext_valign_sub">2</span><span>CO</span><span class="ext_valign_sub">3</span><span>溶液，原理如图所示。</span>
            </p>
            <p class="ext_text-align_left">
                <img width="355px" height="133px" class="scale-img" src="http://hiphotos.baidu.com/baidu/pic/item/5243fbf2b211931386d9effb6f380cd790238de6.jpg">
            </p>
            <p><span>阳极的电极反应式为_____________________，阴极产生的物质A的化学式为____________。</span></p>
            <p>
                <span>（5）铝粉在1000℃时可与N</span><span class="ext_valign_sub">2</span><span>反应制备AlN。在铝粉中添加少量NH</span><span class="ext_valign_sub">4</span><span>Cl固体并充分混合，有利于AlN的制备，其主要原因是_____________________。</span>
            </p>
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    <span class="queindex-wrap"><span class="queindex">1</span></span>

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        <div class="questem-inner bdjson">
            <p>
                <span>1．如图所示，两个单匝线圈</span><span class="ext_italic">a</span><span>、</span><span class="ext_italic">b</span><span>的半径分别为</span><span class="ext_italic">r</span><span>和2</span><span class="ext_italic">r</span><span>.圆形匀强磁场</span><span class="ext_italic">B</span><span>的边缘恰好与</span><span class="ext_italic">a</span><span>线圈重合，则穿过</span><span class="ext_italic">a</span><span>、</span><span class="ext_italic">b</span><span>两线圈的磁通量之比为(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; )</span>
            </p>
            <p class="ext_text-align_left">
                <img width="170px" height="157px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/b7003af33a87e9506812312d1a385343fbf2b46e.jpg">
            </p>
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    </div>
    <div class="que-options">
        <div class="queoptions-inner bdjson clearfix">
            <div class="opt-item" style="float: left; height: 26px; line-height: 26px;">
                <p><span class="prefix">A</span><span>1:1</span></p>
            </div>
            <div class="opt-item" style="float: left; height: 26px; line-height: 26px;">
                <p><span class="prefix">B</span><span>1:2</span></p>
            </div>
            <div class="opt-item" style="float: left; height: 26px; line-height: 26px;">
                <p><span class="prefix">C</span><span>1:4</span></p>
            </div>
            <div class="opt-item" style="float: left; height: 26px; line-height: 26px;">
                <p><span class="prefix">D</span><span>4:1</span></p>
            </div>
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        <span class="queindex-wrap"><span class="queindex">9</span></span>

        <div class="que-stem">
            <div class="questem-inner bdjson">
                <p><span>9．多项选择题，每小题4分，共计16分．每小题有多个选项符合题意．全部选对的得4分，选对但不全的得2分。错选或不答的得0分．</span></p>
                <p>
                    <span>如图所示，三个小球</span><span class="ext_italic">A、B、C</span><span>的质量均为</span><span class="ext_italic">m</span><span>，</span><span class="ext_italic">A</span><span>与</span><span class="ext_italic">B、C</span><span>间通过铰链用轻杆连接，杆长为</span><span class="ext_italic">L</span><span>，</span><span class="ext_italic">B、C</span><span>置于水平地面上，用一轻质弹簧连接，弹簧处于原长.现</span><span class="ext_italic">A</span><span>由静止释放下降到最低点，两轻杆间夹角</span><span class="ext_italic">α</span><span>由60°变为120°，</span><span class="ext_italic">A、B、C</span><span>在同一竖直平面内运动，弹簧在弹性限度内，忽略一切摩擦，重力加速度为</span><span class="ext_italic">g</span><span>.则此下降过程中</span>
                </p>
                <p class="ext_text-align_left">
                    <img width="201px" height="165px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/6f061d950a7b02085ab8fda068d9f2d3572cc87a.jpg">
                </p>
            </div>
        </div>
        <div class="que-options">
            <div class="queoptions-inner bdjson clearfix">
                <div class="opt-item" style="display: block;">
                    <p>
                        <span class="prefix">A</span><span class="ext_italic">A</span><span>的动能达到最大前，</span><span class="ext_italic">B</span><span>受到地面的支持力小于</span><img width="16px" height="42px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/cdbf6c81800a19d81733464439fa828ba61e46bb.jpg"><span class="ext_italic">mg</span>
                    </p>
                </div>
                <div class="opt-item" style="display: block;">
                    <p>
                        <span class="prefix">B</span><span class="ext_italic">A</span><span>的动能最大时，</span><span class="ext_italic">B</span><span>受到地面的支持力等于</span><img width="16px" height="42px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/810a19d8bc3eb1359e7975faac1ea8d3fd1f4431.jpg"><span class="ext_italic">mg</span>
                    </p>
                </div>
                <div class="opt-item" style="display: block;">
                    <p>
                        <span class="prefix">C</span><span>弹簧的弹性势能最大时，</span><span class="ext_italic">A</span><span>的加速度方向竖直向下</span>
                    </p>
                </div>
                <div class="opt-item" style="display: block;">
                    <p>
                        <span class="prefix">D</span><span>弹簧的弹性势能最大值为</span><img width="27px" height="45px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/810a19d8bc3eb1359ef775faac1ea8d3fd1f44bb.jpg"><span class="ext_italic">&nbsp;mgL</span>
                    </p>
                </div>
            </div>
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    <div class="question-box-inner">
        <span class="queindex-wrap"><span class="queindex">10</span></span>

        <div class="que-stem">
            <div class="questem-inner bdjson">
                <p>
                    <span>10．【必做题】（8分）利用如题10-1图所示的实验装置探究恒力做功与物体动能变化的关系.小车的质量为</span><span class="ext_italic">M</span><span>=200.0 g，钩码的质量为</span><span class="ext_italic">m</span><span>=10.0 g，打点计时器的电源为50 Hz的交流电.</span>
                </p>
                <p class="ext_text-align_left">
                    <img width="293px" height="171px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/d058ccbf6c81800ab3e04b4fbb3533fa828b476e.jpg">
                </p>
                <p><span>（1）挂钩码前，为了消除摩擦力的影响，应调节木板右侧的高度，直至向左轻推小车观察到_____________________.</span></p>
                <p>
                    <span>（2）挂上钩码，按实验要求打出的一条纸带如题10-2图所示.选择某一点为</span><span class="ext_italic">O</span><span>，一次每隔4个计时点取一个计数点.用刻度尺量出相邻计数点间的距离</span><img width="23px" height="18px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/fc1f4134970a304e909c62bbdbc8a786c9175c31.jpg"><span>，记录在纸带上.计算打出各计数点时小车的速度</span><span class="ext_italic">v</span><span>，其中打出计数点“1”时小车的速度</span><span class="ext_italic">v</span><span class="ext_valign_sub">1</span><span>=______m/s.</span>
                </p>
                <p class="ext_text-align_center">
                    <img width="648px" height="143px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/18d8bc3eb13533fa2cb3516fa2d3fd1f41345b6e.jpg">
                </p>
                <p>
                    <span>（3）将钩码的重力视位小车受到的拉力，取</span><span class="ext_italic">g</span><span>=9.80 m/s</span><span class="ext_valign_sup">2</span><span>，利用</span><span class="ext_italic">W=mg</span><img width="23px" height="18px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/8b13632762d0f703bdc3579d02fa513d2697c57a.jpg"><span>算出拉力对小车做的功</span><span class="ext_italic">W</span><span>.利用</span><img width="77px" height="41px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/314e251f95cad1c81f053e66753e6709c93d5131.jpg"><span>算出小车动能，并求出动能的变化量</span><img width="29px" height="24px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/bd3eb13533fa828b09265fa2f71f4134970a5a6e.jpg"><span>.计算结果见下表.</span>
                </p>
                <p>
                    <img width="571px" height="89px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/241f95cad1c8a786701a884f6d09c93d70cf50bb.jpg">
                </p>
                <p>
                    <span>请根据表中的数据，在答题卡的方格纸上作出</span><img data-lazysrc="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/f603918fa0ec08fa7e71d1e653ee3d6d55fbda7a.jpg" width="60px" height="24px" class="scale-img"><span>图象.</span>
                </p>
                <p class="ext_text-align_left">
                    <img data-lazysrc="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/94cad1c8a786c917c5339078c33d70cf3bc757bb.jpg" width="305px" height="255px" class="scale-img">
                </p>
                <p>
                    <span>（4）实验结果表明，</span><img data-lazysrc="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/908fa0ec08fa513d16dbae9f376d55fbb2fbd97a.jpg" width="29px" height="24px" class="scale-img"><span>总是略小于</span><span class="ext_italic">W</span><span>.某同学猜想是由于小车所受拉力小于钩码重力造成的.用题中小车和钩码质量的数据可算出小车受到的实际拉力</span><span class="ext_italic">F</span><span>=__________.</span>
                </p>
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        <span class="queindex-wrap"><span class="queindex">1</span></span>

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            <div class="questem-inner bdjson">
                <p class="ext_text-align_left"><span>1．化学与社会、生活密切相关。对下列现象或事实的解释正确的是</span></p>
            </div>
        </div>
        <div class="que-options">
            <div class="queoptions-inner bdjson clearfix">
                <div class="opt-item" style="display: block;">
                    <p class="ext_text-align_left">
                        <span class="prefix">A</span><img width="502px" height="68px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/adaf2edda3cc7cd9f015f3f83301213fb80e91d3.jpg">
                    </p>
                </div>
                <div class="opt-item" style="display: block;">
                    <p class="ext_text-align_left">
                        <span class="prefix">B</span><img width="497px" height="64px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/3b87e950352ac65c7593a252f1f2b21193138a79.jpg">
                    </p>
                </div>
                <div class="opt-item" style="display: block;">
                    <p class="ext_text-align_left">
                        <span class="prefix">C</span><img width="497px" height="98px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/a2cc7cd98d1001e94604d32eb20e7bec54e797d3.jpg">
                    </p>
                </div>
                <div class="opt-item" style="display: block;">
                    <p class="ext_text-align_left">
                        <span class="prefix">D</span><img width="499px" height="98px" class="scale-img" src="https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/baidu/pic/item/faedab64034f78f00cae5ed273310a55b3191c6e.jpg">
                    </p>
                </div>
            </div>
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            <span class="que-score">分值: 3分</span>

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<div class="search-exam dj-search-exam">
    <div class="exam-head">
        <p class="exam-head-left">
            <span>题型：单选题</span><i class="line"></i> <span>题类：真题</span><i class="line"></i> <span>难易度：普通</span>
        </p>

        <p class="exam-head-right">
            <span>试题来源：<a href="/paper/view-190314.shtml" target="_blank">2017年高考理数真题试卷（北京卷）（正式版）</a></span>
        </p>
    </div>
    <div class="exam-con">

        <div class="exam-q">
            （2017•北京卷）执行如图所示的程序框图，输出的S值为（　　）
            <img width="211" height="242" src="http://tikupic.21cnjy.com/a0/54/a05494a4e26f974b839c205f6d70bfca.png" alt="" v:shapes="_x0000_i1238" draggable="false">
        </div>

        <div class="exam-s">

            <span class="op-item" style="width: 224px; margin-right: 0px; height: 28px; clear: none;"><span class="op-item-nut" style="margin-top: 2px;">A、</span><span class="op-item-meat" style="margin-top: 2px;">2</span></span>

            <span class="op-item" style="width: 224px; margin-right: 0px; height: 28px; clear: none;"><span class="op-item-nut" style="margin-top: 2px;">B、</span><span class="op-item-meat" style="margin-top: 0px;"><img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%27%3E%3Cmrow%3E%3Cmfrac%3E%3Cmn%3E3%3C%2Fmn%3E%3Cmn%3E2%3C%2Fmn%3E%3C%2Fmfrac%3E%3C%2Fmrow%3E%3C%2Fmath%3E&amp;key=9dbca5392c4a5106a4151682e34f5d74" style="vertical-align: middle;" draggable="false"></span></span>

            <span class="op-item" style="width: 224px; margin-right: 0px; height: 28px; clear: none;"><span class="op-item-nut" style="margin-top: 2px;">C、</span><span class="op-item-meat" style="margin-top: 0px;"><img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%27%3E%3Cmrow%3E%3Cmfrac%3E%3Cmn%3E5%3C%2Fmn%3E%3Cmn%3E3%3C%2Fmn%3E%3C%2Fmfrac%3E%3C%2Fmrow%3E%3C%2Fmath%3E&amp;key=9dbca5392c4a5106a4151682e34f5d74" style="vertical-align: middle;" draggable="false"></span></span>

            <span class="op-item" style="width: 224px; margin-right: 0px; height: 28px; clear: none;"><span class="op-item-nut" style="margin-top: 2px;">D、</span><span class="op-item-meat" style="margin-top: 0px;"><img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%27%3E%3Cmrow%3E%3Cmfrac%3E%3Cmn%3E8%3C%2Fmn%3E%3Cmn%3E5%3C%2Fmn%3E%3C%2Fmfrac%3E%3C%2Fmrow%3E%3C%2Fmath%3E&amp;key=9dbca5392c4a5106a4151682e34f5d74" style="vertical-align: middle;" draggable="false"></span></span>

        </div>


    </div>
    <div class="analyticbox-brick analyticbox-brick-normal">
        <div class="analyticbox">
            <span class="exam-point">【考点】</span>
            <div class="analyticbox-body">

                程序框图

            </div>
        </div>

        <div class="analyticbox">
            <span class="exam-answer">【答案】</span>
            <div class="analyticbox-body">

                C
            </div>
        </div>


        <div class="analyticbox analyticbox1">
            <span class="exam-analytic">【解析】</span>
            <div class="analyticbox-body">
                【解答】解：当k=0时，满足进行循环的条件，执行完循环体后，k=1，S=2， 当k=1时，满足进行循环的条件，执行完循环体后，k=2，S=
                <img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%27%3E%3Cmrow%3E%3Cmfrac%3E%3Cmn%3E3%3C%2Fmn%3E%3Cmn%3E2%3C%2Fmn%3E%3C%2Fmfrac%3E%3C%2Fmrow%3E%3C%2Fmath%3E&amp;key=9dbca5392c4a5106a4151682e34f5d74" style="vertical-align: middle;"> ，<br>当k=2时，满足进行循环的条件，执行完循环体后，k=3，S=
                <img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%27%3E%3Cmrow%3E%3Cmfrac%3E%3Cmn%3E5%3C%2Fmn%3E%3Cmn%3E3%3C%2Fmn%3E%3C%2Fmfrac%3E%3C%2Fmrow%3E%3C%2Fmath%3E&amp;key=9dbca5392c4a5106a4151682e34f5d74" style="vertical-align: middle;"> ，<br>当k=3时，不满足进行循环的条件，<br>故输出结果为：
                <img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%27%3E%3Cmrow%3E%3Cmfrac%3E%3Cmn%3E5%3C%2Fmn%3E%3Cmn%3E3%3C%2Fmn%3E%3C%2Fmfrac%3E%3C%2Fmrow%3E%3C%2Fmath%3E&amp;key=9dbca5392c4a5106a4151682e34f5d74" style="vertical-align: middle;"> ，<br>故选：C．<br>【分析】由已知中的程序框图可知：该程序的功能是利用循环结构计算并输出变量S的值，模拟程序的运行过程，分析循环中各变量值的变化情况，可得答案． &nbsp;&nbsp;
            </div>
        </div>


    </div>
    <div class="exam-foot">
        <p class="exam-foot-left">
            <a href="javascript:;" onclick="OT2.QCollect(this, 3946558 )"><i class="icona-shoucang"></i>收藏</a>
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        </p>
        <p class="exam-foot-right">
            <span>组卷次数：4次</span>

            <a class="addbtn J_AddQuestion" href="javascript:;"><b>+</b>选题</a>

        </p>
    </div>
</div>

<div class="search-exam dj-search-exam">
    <div class="exam-head">
        <p class="exam-head-left">
            <span>题型：填空题</span><i class="line"></i> <span>题类：真题</span><i class="line"></i> <span>难易度：困难</span>
        </p>

        <p class="exam-head-right">
            <span>试题来源：<a href="/paper/view-190314.shtml" target="_blank">2017年高考理数真题试卷（北京卷）（正式版）</a></span>
        </p>
    </div>
    <div class="exam-con">

        <div class="exam-q">
            （2017•北京卷）三名工人加工同一种零件，他们在一天中的工作情况如图所示，其中A<sub>i</sub>的横、纵坐标分别为第i名工人上午的工作时间和加工的零件数，点B<sub>i</sub>的横、纵坐标分别为第i名工人下午的工作时间和加工的零件数，i=1，2，3． ①记Q<sub>i</sub>为第i名工人在这一天中加工的零件总数，则Q<sub>1</sub> ， Q<sub>2</sub> ， Q<sub>3</sub>中最大的是<span class="q-blank">&nbsp;</span> ．
            <br>②记p<sub>i</sub>为第i名工人在这一天中平均每小时加工的零件数，则p<sub>1</sub> ， p<sub>2</sub> ， p<sub>3</sub>中最大的是<span class="q-blank">&nbsp;</span> ．
            <br><img width="242" height="210" src="http://tikupic.21cnjy.com/46/5e/465ec3b92e9bc80ade2ff4b061e89d0d.png" alt="" v:shapes="_x0000_i1233" draggable="false">
        </div>


    </div>
    <div class="analyticbox-brick analyticbox-brick-normal">
        <div class="analyticbox">
            <span class="exam-point">【考点】</span>
            <div class="analyticbox-body">

                函数的图象与图象变化

            </div>
        </div>

        <div class="analyticbox">
            <span class="exam-answer">【答案】</span>
            <div class="analyticbox-body">

                【第1空】Q<sub>1</sub><br>【第2空】p<sub>2</sub>
            </div>
        </div>


        <div class="analyticbox analyticbox1">
            <span class="exam-analytic">【解析】</span>
            <div class="analyticbox-body">
                【解答】解：①若Q<sub>i</sub>为第i名工人在这一天中加工的零件总数， Q<sub>1</sub>=A<sub>1</sub>的综坐标+B<sub>1</sub>的综坐标；<br>Q<sub>2</sub>=A<sub>2</sub>的综坐标+B<sub>2</sub>的综坐标，<br>Q<sub>3</sub>=A<sub>3</sub>的综坐标+B<sub>3</sub>的综坐标，<br>由已知中图象可得：Q<sub>1</sub> ， Q<sub>2</sub> ， Q<sub>3</sub>中最大的是Q<sub>1</sub> ，
                <br>②若p<sub>i</sub>为第i名工人在这一天中平均每小时加工的零件数，<br>则p<sub>i</sub>为A<sub>i</sub>B<sub>i</sub>中点与原点连线的斜率，<br>故p<sub>1</sub> ， p<sub>2</sub> ， p<sub>3</sub>中最大的是p<sub>2</sub><br>故答案为：Q<sub>1</sub> ， p<sub>2</sub><br>【分析】①若Q<sub>i</sub>为第i名工人在这一天中加工的零件总数，则Q<sub>i</sub>=A<sub>i</sub>的综坐标+B<sub>i</sub>的综坐标；进而得到答案．<br>②若p<sub>i</sub>为第i名工人在这一天中平均每小时加工的零件数，则p<sub>i</sub>为A<sub>i</sub>B<sub>i</sub>中点与原点连线的斜率；进而得到答案． &nbsp;&nbsp;
            </div>
        </div>


    </div>
    <div class="exam-foot">
        <p class="exam-foot-left">
            <a href="javascript:;" onclick="OT2.QCollect(this, 3946569 )"><i class="icona-shoucang"></i>收藏</a>
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        </p>
        <p class="exam-foot-right">
            <span>组卷次数：3次</span>

            <a class="addbtn J_AddQuestion" href="javascript:;"><b>+</b>选题</a>

        </p>
    </div>
</div>

<div class="search-exam dj-search-exam">
    <div class="exam-head">
        <p class="exam-head-left">
            <span>题型：单选题</span><i class="line"></i> <span>题类：真题</span><i class="line"></i> <span>难易度：普通</span>
        </p>

        <p class="exam-head-right">
            <span>试题来源：<a href="/paper/view-190222.shtml" target="_blank">2017年高考文数真题试卷（新课标Ⅰ卷）（正式版）</a></span>
        </p>
    </div>
    <div class="exam-con">

        <div class="exam-q">
            （2017•新课标Ⅰ卷）如图，在下列四个正方体中，A，B为正方体的两个顶点，M，N，Q为所在棱的中点，则在这四个正方体中，直线AB与平面MNQ不平行的是（　　）
        </div>

        <div class="exam-s">

            <span class="op-item" style="width: 224px; margin-right: 0px; height: 114px; clear: none;"><span class="op-item-nut" style="margin-top: 45px;">A、</span><span class="op-item-meat" style="margin-top: 1px;"><img width="122" height="112" src="http://tikupic.21cnjy.com/95/5d/955dc27c0dae4674ab5b638f262100b1.png" alt="" v:shapes="_x0000_i1254" draggable="false"></span></span>

            <span class="op-item" style="width: 224px; margin-right: 0px; height: 114px; clear: none;"><span class="op-item-nut" style="margin-top: 45px;">B、</span><span class="op-item-meat" style="margin-top: 0px;"><img width="119" height="114" src="http://tikupic.21cnjy.com/3b/34/3b3498db17fbb7f717b6067698564853.png" alt="" v:shapes="_x0000_i1253" draggable="false"></span></span>

            <span class="op-item" style="width: 224px; margin-right: 0px; height: 114px; clear: none;"><span class="op-item-nut" style="margin-top: 45px;">C、</span><span class="op-item-meat" style="margin-top: 7px;"><img width="111" height="100" src="http://tikupic.21cnjy.com/2a/73/2a73c227231d453a5e70904972cb1d82.png" alt="" v:shapes="_x0000_i1252" draggable="false"></span></span>

            <span class="op-item" style="width: 224px; margin-right: 0px; height: 114px; clear: none;"><span class="op-item-nut" style="margin-top: 45px;">D、</span><span class="op-item-meat" style="margin-top: 4px;"><img width="109" height="106" src="http://tikupic.21cnjy.com/31/c6/31c6dec79a7d6d5f3014ac3ecfa2b3db.png" alt="" v:shapes="_x0000_i1251" draggable="false"></span></span>

        </div>


    </div>
    <div class="analyticbox-brick analyticbox-brick-normal">
        <div class="analyticbox">
            <span class="exam-point">【考点】</span>
            <div class="analyticbox-body">

                直线与平面平行的判定

            </div>
        </div>

        <div class="analyticbox">
            <span class="exam-answer">【答案】</span>
            <div class="analyticbox-body">

                A
            </div>
        </div>


        <div class="analyticbox analyticbox1">
            <span class="exam-analytic">【解析】</span>
            <div class="analyticbox-body">
                【解答】解：对于选项B，由于AB∥MQ，结合线面平行判定定理可知B不满足题意； 对于选项C，由于AB∥MQ，结合线面平行判定定理可知C不满足题意；<br>对于选项D，由于AB∥NQ，结合线面平行判定定理可知D不满足题意；<br>所以选项A满足题意，<br>故选：A．<br>【分析】利用线面平行判定定理可知B、C、D均不满足题意，从而可得答案． &nbsp;&nbsp;
            </div>
        </div>


    </div>
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        <p class="exam-foot-left">
            <a href="javascript:;" onclick="OT2.QCollect(this, 3945363 )"><i class="icona-shoucang"></i>收藏</a>
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        <p class="exam-foot-right">
            <span>组卷次数：5次</span>

            <a class="addbtn J_AddQuestion" href="javascript:;"><b>+</b>选题</a>

        </p>
    </div>
</div>

<div class="search-exam dj-search-exam">
    <div class="exam-head">
        <p class="exam-head-left">
            <span>题型：单选题</span><i class="line"></i> <span>题类：常考题</span><i class="line"></i> <span>难易度：普通</span>
        </p>

        <p class="exam-head-right">
            <span>试题来源：<a href="/paper/view-172895.shtml" target="_blank">2016-2017学年河北省唐山市开滦一中高二（下）期中化学试卷（理科）</a></span>
        </p>
    </div>
    <div class="exam-con">

        <div class="exam-q">
            为了提纯下表所列物质（括号内为杂质），有关除杂试剂和分离方法的选择不正确的是（&nbsp;&nbsp; ）
            <table border="1" cellspacing="0" cellpadding="0">
                <tbody>
                    <tr>
                        <td width="59" valign="top">选项</td>
                        <td width="173" valign="top">被提纯的物质</td>
                        <td width="83" valign="top">除杂试剂</td>
                        <td width="83" valign="top">分离方法</td>
                    </tr>
                    <tr>
                        <td valign="top">A</td>
                        <td valign="top">己烷（己烯）</td>
                        <td valign="top">溴水</td>
                        <td valign="top">分液</td>
                    </tr>
                    <tr>
                        <td valign="top">B</td>
                        <td valign="top">淀粉溶液（NaCl）</td>
                        <td valign="top">水</td>
                        <td valign="top">渗析</td>
                    </tr>
                    <tr>
                        <td valign="top">C</td>
                        <td valign="top">CH<sub>3</sub>CH<sub>2</sub>OH（CH<sub>3</sub>COOH）</td>
                        <td valign="top">CaO</td>
                        <td valign="top">蒸馏</td>
                    </tr>
                    <tr>
                        <td valign="top">D</td>
                        <td valign="top">肥皂（甘油）</td>
                        <td valign="top">NaCl</td>
                        <td valign="top">过滤</td>
                    </tr>
                </tbody>
            </table>
        </div>

        <div class="exam-s">

            <span class="op-item" style="width: 224px; margin-right: 0px; height: 24px; clear: none;"><span class="op-item-nut" style="margin-top: 0px;">A、</span><span class="op-item-meat" style="margin-top: 0px;">A&nbsp;&nbsp;</span></span>

            <span class="op-item" style="width: 224px; margin-right: 0px; height: 24px; clear: none;"><span class="op-item-nut" style="margin-top: 0px;">B、</span><span class="op-item-meat" style="margin-top: 0px;">B&nbsp;&nbsp;</span></span>

            <span class="op-item" style="width: 224px; margin-right: 0px; height: 24px; clear: none;"><span class="op-item-nut" style="margin-top: 0px;">C、</span><span class="op-item-meat" style="margin-top: 0px;">C&nbsp;&nbsp;</span></span>

            <span class="op-item" style="width: 224px; margin-right: 0px; height: 24px; clear: none;"><span class="op-item-nut" style="margin-top: 0px;">D、</span><span class="op-item-meat" style="margin-top: 0px;">D</span></span>

        </div>


    </div>
    <div class="analyticbox-brick analyticbox-brick-normal">
        <div class="analyticbox">
            <span class="exam-point">【考点】</span>
            <div class="analyticbox-body">

                物质的分离、提纯的基本方法选择与应用

            </div>
        </div>

        <div class="analyticbox">
            <span class="exam-answer">【答案】</span>
            <div class="analyticbox-body">

                A
            </div>
        </div>


        <div class="analyticbox analyticbox1">
            <span class="exam-analytic">【解析】</span>
            <div class="analyticbox-body">
                【解答】解：A．己烯与溴水发生加成反应后，与己烷不分层，则分液不能分离，应选高锰酸钾除杂，故A错误； B．淀粉不能透过半透膜，而离子能，则利用渗析法可分离，故B正确；<br>C．乙酸与CaO反应，增大与乙醇的沸点差异，然后蒸馏可除杂，故C正确；<br>D．加NaCl降低肥皂的溶解度，发生盐析，然后过滤可除杂，故D正确；<br>故选A．<br>【分析】A．己烯与溴水发生加成反应后，与己烷不分层；<br>B．淀粉不能透过半透膜，而离子能；<br>C．乙酸与CaO反应，增大与乙醇的沸点差异；<br>D．加NaCl降低肥皂的溶解度，发生盐析． &nbsp;&nbsp;
            </div>
        </div>


    </div>
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        <p class="exam-foot-left">
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            <span>组卷次数：2次</span>

            <a class="addbtn J_AddQuestion" href="javascript:;"><b>+</b>选题</a>

        </p>
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    <div class="exam-head">
        <p class="exam-head-left">
            <span>题型：综合题</span><i class="line"></i> <span>题类：常考题</span><i class="line"></i> <span>难易度：普通</span>
        </p>

        <p class="exam-head-right">
            <span>试题来源：<a href="/paper/view-172895.shtml" target="_blank">2016-2017学年河北省唐山市开滦一中高二（下）期中化学试卷（理科）</a></span>
        </p>
    </div>
    <div class="exam-con">

        <div class="exam-q">
            某有机物A的分子式为C<sub>9</sub>H<sub>10</sub>O<sub>2</sub> ， 其核磁共振氢谱有5个峰，面积之比为1：2：2：2：3，红外光谱如图：
            <img width="377" height="173" src="http://tikupic.21cnjy.com/12/08/1208ab7075b73e7f5c5724ab4328ec3d.png" alt="" v:shapes="_x0000_i1128" draggable="false"><br>已知，A分子中只含一个苯环，且苯环上只有一个取代基，A与NaOH溶液共热的两种生成物均可用于食品工业（常见防腐剂和饮品），试填空．
        </div>


        <div class="exam-qlist">
            <div class="exam-con">

                <div class="analyticbox">
                    <div class="subexam-head"><span>（1）、</span>A的结构简式为<span class="q-blank">&nbsp;</span> ．</div>


                </div>


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            <div class="analyticbox">
                <span class="exam-answer">【答案】</span>
                <div class="analyticbox-body">

                    【第1空】<img width="153" height="43" src="http://tikupic.21cnjy.com/2a/34/2a34eaf61226b58cbd19a6b4e4a803a8.png" alt="" v:shapes="_x0000_i1129">
                </div>
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            <div class="exam-con">

                <div class="analyticbox">
                    <div class="subexam-head">
                        <span>（2）、</span>A的分子结构中只含一个甲基的依据是<span class="q-blank">&nbsp;</span>（填序号）． a．A的相对分子质量&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; b．A的分子式<br>c．A的核磁共振氢谱图&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; d．分子的红外光谱图
                    </div>


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                <span class="exam-answer">【答案】</span>
                <div class="analyticbox-body">

                    【第1空】bc
                </div>
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            <div class="exam-con">

                <div class="analyticbox">
                    <div class="subexam-head"><span>（3）、</span>A的芳香类同分异构体有多种，其中符合下列条件：①分子结构中只含一个官能团；②分子结构中含有一个甲基；③苯环上只有一个取代基，则A的芳香类同分异构体共有<span class="q-blank">&nbsp;</span>种（不包括A本身），其中水解产物能使FeCl<sub>3</sub>溶液变紫色的结构简式为<span class="q-blank">&nbsp;</span> ．
                    </div>


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            <div class="analyticbox">
                <span class="exam-answer">【答案】</span>
                <div class="analyticbox-body">

                    【第1空】5<br>【第2空】<img width="156" height="48" src="http://tikupic.21cnjy.com/eb/c9/ebc9e2776613144c59fc34160d44d751.png" alt="" v:shapes="_x0000_i1130">
                </div>
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    <div class="analyticbox-brick">
        <div class="analyticbox">
            <span class="exam-point">【考点】</span>
            <div class="analyticbox-body">

                有机物的结构和性质

            </div>
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        <div class="analyticbox analyticbox1">
            <span class="exam-analytic">【解析】</span>
            <div class="analyticbox-body">
                【解答】解：（1）机物A的分子式为C<sub>9</sub>H<sub>10</sub>O<sub>2</sub> ， A分子中只含一个苯环，且苯环上只有一个取代基，则苯环上的H的类型有3种，氢原子数目之比为1：2：2，其核磁共振氢谱有5个峰，面积之比为1：2：2：2：3，则另外的2个峰2：3来自侧链；A与NaOH溶液共热的两种生成物均可用于食品工业（常见防腐剂和饮品），结合A的红外光谱可知A分子中含有酯基，则A为苯甲酸乙酯，其结构简式为：
                <img width="153" height="43" src="http://tikupic.21cnjy.com/4c/3b/4c3b9c817977e80acccf22e001c33a22.png" alt="" v:shapes="_x0000_i1131"> ， 故答案为：
                <img width="153" height="43" src="http://tikupic.21cnjy.com/4c/3b/4c3b9c817977e80acccf22e001c33a22.png" alt="" v:shapes="_x0000_i1132"> ；（2）通过A的分子式C<sub>9</sub>H<sub>10</sub>O<sub>2</sub>及核磁共振氢谱有5个峰，面积之比为1：2：2：2：3可确定A分子中含有1个甲基，而A的相对分子质量、红外光谱都无法确定是否含有甲基，故bc正确，<br>故答案为：bc；（3）A的芳香类同分异构体有多种，其中符合下列条件：①分子结构中只含一个官能团，可能为羧基或酯基；②分子结构中含有一个甲基；③苯环上只有一个取代基，侧链为﹣OOCH<sub>2</sub>CH<sub>2</sub>CH<sub>3</sub> ， 或﹣CH<sub>2</sub>OOCCH<sub>3</sub> ， 或﹣COOCH<sub>2</sub>CH<sub>3</sub> ， 或﹣CH（CH<sub>3</sub>）OOCH，或﹣CH（CH<sub>3</sub>）COOH，共有5种；<br>其中水解产物能使FeCl<sub>3</sub>溶液变紫色，说明有机物分子水解产物中含有酚羟基，其结构简式为：
                <img width="156" height="48" src="http://tikupic.21cnjy.com/eb/c9/ebc9e2776613144c59fc34160d44d751.png" alt="" v:shapes="_x0000_i1133"> ，<br>故答案为：5；
                <img width="156" height="48" src="http://tikupic.21cnjy.com/eb/c9/ebc9e2776613144c59fc34160d44d751.png" alt="" v:shapes="_x0000_i1134"> ．<br>【分析】（1）某有机物A的分子式为C<sub>9</sub>H<sub>10</sub>O<sub>2</sub> ， A分子中只含一个苯环，且苯环上只有一个取代基，则苯环上的H的类型有3种，氢原子数目之比为1：2：2，其核磁共振氢谱有5个峰，面积之比为1：2：2：2：3，则另外的2个峰2：3来自侧链；A与NaOH溶液共热的两种生成物均可用于食品工业（常见防腐剂和饮品），结合A的红外光谱可知A分子中含有酯基，据此可判断A的结构；（2）通过A的分子式和核磁共振氢谱可判断H的类型，从而确定含有甲基，而相对分子质量和红外光谱无法确定是否含有甲基；（3）A的芳香类同分异构体有多种，其中符合下列条件：①分子结构中只含一个官能团，可能为羧基或酯基；②分子结构中含有一个甲基；③苯环上只有一个取代基，侧链为﹣OOCH<sub>2</sub>CH<sub>2</sub>CH<sub>3</sub> ， 或﹣CH<sub>2</sub>OOCCH<sub>3</sub> ， 或﹣COOCH<sub>2</sub>CH<sub>3</sub> ， 或﹣CH（CH<sub>3</sub>）OOCH，或﹣CH（CH<sub>3</sub>）COOH；水解产物能使FeCl<sub>3</sub>溶液变紫色，说明分子中含有酚羟基，据此判断满足体积的有机物的结构简式． &nbsp;&nbsp;
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            <span>题型：填空题</span><i class="line"></i> <span>题类：常考题</span><i class="line"></i> <span>难易度：普通</span>
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            <span>试题来源：<a href="/paper/view-167164.shtml" target="_blank">人教版小学数学一年级下册期末评估卷</a></span>
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        <div class="exam-q">
            读数与写数。
            <table border="0" cellpadding="0" cellspacing="0">
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                        <td valign="top" width="169">
                            <img data-cke-saved-src="http://tikupic.21cnjy.com/49/05/4905646acc2b401ca6ae469fdcd642aa.jpg" src="http://tikupic.21cnjy.com/49/05/4905646acc2b401ca6ae469fdcd642aa.jpg" v:shapes="图片_x0020_1" height="102" width="91" draggable="false">
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                            <img data-cke-saved-src="http://tikupic.21cnjy.com/99/47/9947320bfc03d4d50456e884e4f845b4.jpg" src="http://tikupic.21cnjy.com/99/47/9947320bfc03d4d50456e884e4f845b4.jpg" v:shapes="_x0000_i1027" height="70" width="211" draggable="false">
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                        <td valign="top" width="169">写作：<span class="q-blank">&nbsp;</span></td>
                        <td valign="top" width="173">写作：<span class="q-blank">&nbsp;</span></td>
                        <td valign="top" width="226">写作：<span class="q-blank">&nbsp;</span></td>
                    </tr>
                    <tr>
                        <td valign="top" width="169">读作：<span class="q-blank">&nbsp;</span></td>
                        <td valign="top" width="173">读作：<span class="q-blank">&nbsp;</span></td>
                        <td valign="top" width="226">读作：<span class="q-blank">&nbsp;</span></td>
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            <span class="exam-point">【考点】</span>
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                21～40的认识；41～100的认识

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            <span class="exam-answer">【答案】</span>
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                【第1空】54<br>【第2空】38<br>【第3空】43<br>【第4空】五十四<br>【第5空】三十八<br>【第6空】四十三
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            <span>题型：填空题</span><i class="line"></i> <span>题类：常考题</span><i class="line"></i> <span>难易度：普通</span>
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            <span>试题来源：<a href="/paper/view-169431.shtml" target="_blank">北师大版小学数学一年级下册第一单元  加与减（一）  评估卷</a></span>
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            把下面的表格填写完整
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                        <td valign="top" width="114"></td>
                        <td colspan="4" valign="top" width="455">
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                        <td valign="top" width="114">原有</td>
                        <td valign="top" width="92">12支</td>
                        <td valign="top" width="123">18把</td>
                        <td valign="top" width="126"><span class="q-blank">&nbsp;</span>辆</td>
                        <td valign="top" width="114">17件</td>
                    </tr>
                    <tr>
                        <td valign="top" width="114">卖出</td>
                        <td valign="top" width="92">5支</td>
                        <td valign="top" width="123"><span class="q-blank">&nbsp;</span>把</td>
                        <td valign="top" width="126">9辆</td>
                        <td valign="top" width="114"><span class="q-blank">&nbsp;</span>件</td>
                    </tr>
                    <tr>
                        <td valign="top" width="114">还剩</td>
                        <td valign="top" width="92"><span class="q-blank">&nbsp;</span>支</td>
                        <td valign="top" width="123">9把</td>
                        <td valign="top" width="126">7辆</td>
                        <td valign="top" width="114">8件</td>
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            <span class="exam-point">【考点】</span>
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                20以内进位加法；20以内退位减法

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            <span class="exam-answer">【答案】</span>
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                【第1空】7<br>【第2空】9<br>【第3空】16<br>【第4空】9
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    <div class="bodyer_3" id="sub_title_1769692" onclick="onClickDaAnShow('1769692')">　
        <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
            <span style="font-family:宋体; font-size:11pt">已知函数f（x）=Asin（ωx</span><span style="font-family:宋体; font-size:11pt">+</span><span style="font-family:宋体; font-size:11pt">φ）</span><span style="font-family:宋体; font-size:11pt">+</span><span style="font-family:宋体; font-size:11pt">B（A</span><span style="font-family:宋体; font-size:11pt">＞</span><span style="font-family:宋体; font-size:11pt">0，ω</span><span style="font-family:宋体; font-size:11pt">＞</span><span style="font-family:宋体; font-size:11pt">0，</span><span style="font-family:宋体; font-size:11pt">|</span><span style="font-family:宋体; font-size:11pt">φ</span><span style="font-family:宋体; font-size:11pt">|＜</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.288.jpeg"><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.004.png"><span style="font-family:宋体; font-size:11pt">）的最大值为2</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.289.jpeg"><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.074.png"><span style="font-family:宋体; font-size:11pt">，最小值为﹣</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.289.jpeg"><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.074.png"><span style="font-family:宋体; font-size:11pt">，周期为π，且图象过（0，﹣</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.290.jpeg"><span style="font-family:宋体; font-size:11pt">）．</span>
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        <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
            <span style="font-family:宋体; font-size:11pt">（1）求函数f（x）的解析式，函数f（x）的单调递增区间．</span></p>
        <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
            <span style="font-family:宋体; font-size:11pt">（2）若方程f（x）=a在</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.291.jpeg"><span style="font-family:宋体; font-size:11pt">．</span>
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    <div class="bodyer_5" id="da_an_id_1769692" style="display: block;">
        <p class="bodyer_5_p_l"><span>【试题来源】</span>
            <a href="paperList.aspx?mod=paper&amp;ac=st&amp;paperID=1769692&amp;rid=85213&amp;op=listsub" target="_blank" title="山东省东营市垦利一中2016-2017学年高一下学期期中数学试题">山东省东营市垦利一中2016-2017学年高一下学期期中数学试题</a>
        </p>
        <p><span class="span">【答案解析】</span></p>
        <p></p>
        <div>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">【考点】H2：正弦函数的图象．</span></p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">【分析】（1）根据三角函数的性质可得A</span><span style="font-family:宋体; font-size:11pt">+</span><span style="font-family:宋体; font-size:11pt">B=</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.292.jpeg"><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.293.png"><span style="font-family:宋体; font-size:11pt">，B﹣A=</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.294.jpeg"><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.293.png"><span style="font-family:宋体; font-size:11pt">，求出A，B．周期为π，求出ω，图象过（0，﹣</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.295.jpeg"><span style="font-family:宋体; font-size:11pt">）带入求出φ，可得函数f（x）的解析式，将内层函数看作整体，放到正弦函数的增区间上，解不等式得函数的单调递增区间；</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">（2）x</span><span style="font-family:宋体; font-size:11pt">∈</span><span style="font-family:宋体; font-size:11pt">时，求出内层函数的取值范围，结合三角函数的图象和性质，求出f（x）的最大值和最小值，即得到f（x）的取值范围．方程f（x）=a看成是函数y=f（x）与y=a有两个交点，可得a的取值范围．以及α，β的关系．即可求出α</span><span style="font-family:宋体; font-size:11pt">+</span><span style="font-family:宋体; font-size:11pt">β的值．</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">【解答】解：（1）函数f（x）=Asin（ωx</span><span style="font-family:宋体; font-size:11pt">+</span><span style="font-family:宋体; font-size:11pt">φ）</span><span style="font-family:宋体; font-size:11pt">+</span><span style="font-family:宋体; font-size:11pt">B（A</span><span style="font-family:宋体; font-size:11pt">＞</span><span style="font-family:宋体; font-size:11pt">0，ω</span><span style="font-family:宋体; font-size:11pt">＞</span><span style="font-family:宋体; font-size:11pt">0，</span><span style="font-family:宋体; font-size:11pt">|</span><span style="font-family:宋体; font-size:11pt">φ</span><span style="font-family:宋体; font-size:11pt">|＜</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.296.jpeg"><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.004.png"><span style="font-family:宋体; font-size:11pt">）的最大值为2</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.297.jpeg"><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.074.png"><span style="font-family:宋体; font-size:11pt">，最小值为﹣</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.297.jpeg"><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.074.png"><span style="font-family:宋体; font-size:11pt">，</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">根据三角函数的性质，</span></p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">可得：A</span><span style="font-family:宋体; font-size:11pt">+</span><span style="font-family:宋体; font-size:11pt">B=</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.298.jpeg"><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.293.png"><span style="font-family:宋体; font-size:11pt">，B﹣A=</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.299.jpeg"><span style="font-family:宋体; font-size:11pt">，</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">∴</span><span style="font-family:宋体; font-size:11pt">A=</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.300.jpeg"><span style="font-family:宋体; font-size:11pt">，B=</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.301.jpeg"><span style="font-family:宋体; font-size:11pt">．</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">又</span><span style="font-family:宋体; font-size:11pt">∵</span><span style="font-family:宋体; font-size:11pt">周期为π=</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.302.jpeg"><span style="font-family:宋体; font-size:11pt">，</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">∴</span><span style="font-family:宋体; font-size:11pt">ω=2．</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">∴</span><span style="font-family:宋体; font-size:11pt">函数f（x）=</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.300.jpeg"><span style="font-family:宋体; font-size:11pt">sin（2x</span><span style="font-family:宋体; font-size:11pt">+</span><span style="font-family:宋体; font-size:11pt">φ）</span><span style="font-family:宋体; font-size:11pt">+</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.303.jpeg"><span style="font-family:宋体; font-size:11pt">．</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">∵</span><span style="font-family:宋体; font-size:11pt">图象过（0，﹣</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.304.jpeg"><span style="font-family:宋体; font-size:11pt">），则sinφ=﹣</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.305.jpeg"><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.006.png"><span style="font-family:宋体; font-size:11pt">，即φ=</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.306.jpeg"><span style="font-family:宋体; font-size:11pt">，k</span><span style="font-family:宋体; font-size:11pt">∈</span><span style="font-family:宋体; font-size:11pt">Z．</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">|</span><span style="font-family:宋体; font-size:11pt">φ</span><span style="font-family:宋体; font-size:11pt">|</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.307.jpeg"><span style="font-family:宋体; font-size:11pt">，</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">∴</span><span style="font-family:宋体; font-size:11pt">φ=</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.308.jpeg"><span style="font-family:宋体; font-size:11pt">．</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">则函数f（x）=</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.309.jpeg"><span style="font-family:宋体; font-size:11pt">sin（2x</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.308.jpeg"><span style="font-family:宋体; font-size:11pt">）</span><span style="font-family:宋体; font-size:11pt">+</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.310.jpeg"><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.009.png"><span style="font-family:宋体; font-size:11pt">．</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">令</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.311.jpeg"><span style="font-family:宋体; font-size:11pt">2x</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.312.jpeg"><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.313.jpeg"><span style="font-family:宋体; font-size:11pt">．</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">得：</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.314.jpeg"><span style="font-family:宋体; font-size:11pt">≤</span><span style="font-family:宋体; font-size:11pt">x</span><span style="font-family:宋体; font-size:11pt">≤</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.315.jpeg"><span style="font-family:宋体; font-size:11pt">，k</span><span style="font-family:宋体; font-size:11pt">∈</span><span style="font-family:宋体; font-size:11pt">Z．</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">∴</span><span style="font-family:宋体; font-size:11pt">函数f（x）的单调递增区间为</span><span style="font-family:宋体; font-size:11pt">[</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.316.jpeg"><span style="font-family:宋体; font-size:11pt">≤</span><span style="font-family:宋体; font-size:11pt">x</span><span style="font-family:宋体; font-size:11pt">≤</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.315.jpeg"><span style="font-family:宋体; font-size:11pt">]</span><span style="font-family:宋体; font-size:11pt">，k</span><span style="font-family:宋体; font-size:11pt">∈</span><span style="font-family:宋体; font-size:11pt">Z．</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">（2））x</span><span style="font-family:宋体; font-size:11pt">∈</span><span style="font-family:宋体; font-size:11pt">时，</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">可得：2x</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.317.jpeg"><span style="font-family:宋体; font-size:11pt">∈[</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.318.jpeg"><span style="font-family:宋体; font-size:11pt">，π</span><span style="font-family:宋体; font-size:11pt">]</span><span style="font-family:宋体; font-size:11pt">．</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">那么sin（2x</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.318.jpeg"><span style="font-family:宋体; font-size:11pt">）</span><span style="font-family:宋体; font-size:11pt">∈</span><span style="font-family:宋体; font-size:11pt">；</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">∴</span><span style="font-family:宋体; font-size:11pt">f（x）</span><span style="font-family:宋体; font-size:11pt">∈[</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.319.jpeg"><span style="font-family:宋体; font-size:11pt">，2</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.320.jpeg"><span style="font-family:宋体; font-size:11pt">]</span><span style="font-family:宋体; font-size:11pt">．</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">方程f（x）=a看成是函数y=f（x）与y=a有两个交点，</span></p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">由三角函数的图象及性质可知：a的取值范围为</span><span style="font-family:宋体; font-size:11pt">[</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.321.jpeg"><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.009.png"><span style="font-family:宋体; font-size:11pt">，2</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.320.jpeg"><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.074.png"><span style="font-family:宋体; font-size:11pt">）．</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">两个交点分别为α，β，具有对称性．x=</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.322.jpeg"><span style="font-family:宋体; font-size:11pt">为x</span><span style="font-family:宋体; font-size:11pt">∈</span><span style="font-family:宋体; font-size:11pt">的一条对称轴．</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">∴</span><span style="font-family:宋体; font-size:11pt">2x</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.323.jpeg"><span style="font-family:宋体; font-size:11pt">=</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.324.jpeg"><span style="font-family:宋体; font-size:11pt">，</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">可得对称轴为2x=</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.325.jpeg"><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.102.png"><span style="font-family:宋体; font-size:11pt">，</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">即：α</span><span style="font-family:宋体; font-size:11pt">+</span><span style="font-family:宋体; font-size:11pt">β=</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.325.jpeg"><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.102.png"><span style="font-family:宋体; font-size:11pt">．</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">另解：利用特殊点：令2α</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.323.jpeg"><span style="font-family:宋体; font-size:11pt">=0，可得α=</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.326.jpeg"><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.004.png"><span style="font-family:宋体; font-size:11pt">，</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">另一个：2β</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.327.jpeg"><span style="font-family:宋体; font-size:11pt">=π，可得β=</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.328.jpeg"><span style="font-family:宋体; font-size:11pt">，</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; widows:0">
                <span style="font-family:宋体; font-size:11pt">那么：α</span><span style="font-family:宋体; font-size:11pt">+</span><span style="font-family:宋体; font-size:11pt">β=</span><img border="0" src="http://user.ks5u.cn/html/2017-06-20/CRFHK-AfjDTi65-2017620193027.329.jpeg"><span style="font-family:宋体; font-size:11pt">．</span>
            </p>
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            <span style="color1 :#000000; font-family:宋体; font-size:11pt">实验室常用浓盐酸与二氧化锰反应制取少量氯气，反应的化学方程式为：</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">4HCl</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">（浓）</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">+MnO</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:7pt; vertical-align:sub">2</span><img border="0" src="http://5utk.ks5u.com/user/html/html2016/2016-09-29/EUPP7-wchhpvmp-2016929164340.034.jpeg"><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt"> MnCl</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:7pt; vertical-align:sub">2</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">+2H</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:7pt; vertical-align:sub">2</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">O+Cl</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:7pt; vertical-align:sub">2</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">↑</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">，取足量</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">12mol•L</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:7pt; vertical-align:super">﹣1</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">浓盐酸使其与二氧化锰发生反应，产生的氯气在标准状况下的体积为</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">4.48L</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">．计算（写出具体计算过程）</span>
        </p>
        <p style="font-size:11pt; line-height:150%; margin1:0pt">
            <span style="color1 :#000000; font-family:宋体; font-size:11pt">（</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">1</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">）被氧化的</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">HCl</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">的物质的量&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>
        </p>
        <p style="font-size:11pt; line-height:150%; margin1:0pt">
            <span style="color1 :#000000; font-family:宋体; font-size:11pt">（</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">2</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">）参加反应的</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">MnO</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:7pt; vertical-align:sub">2</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">的质量．</span>
        </p>
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        <p class="bodyer_5_p_l"><span>【试题来源】</span>
            <a href="paperList.aspx?mod=paper&amp;ac=st&amp;paperID=1659243&amp;rid=79824&amp;op=listsub" target="_blank" title="山西省三区八校2017届高三上学期暑期检测化学试卷">山西省三区八校2017届高三上学期暑期检测化学试卷</a>
        </p>
        <p><span class="span">【答案解析】</span></p>
        <p></p>
        <div>
            <p style="font-size:11pt; line-height:150%; margin:0pt">
                <span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">(1)</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">被氧化的氯化氢的物质的量为</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">0.4mol</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">；</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt">
                <span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">(2)</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">参加反应的</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">MnO</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:7pt; vertical-align:sub">2</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">的质量为</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">17.4g</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">．</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; text-align:justify; widows:0">
                <span style="color1 :#000000; font-family:宋体; font-size:11pt">&nbsp;</span></p>
            <p style="font-size:11pt; line-height:150%; margin:0pt">
                <span style="color1 :#000000; font-family:宋体; font-size:11pt">【考点】化学方程式的有关计算．</span></p>
            <p style="font-size:11pt; line-height:150%; margin:0pt">
                <span style="color1 :#000000; font-family:宋体; font-size:11pt">【分析】（</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">1</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">）被氧化的</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">HCl</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">生成氯气，根据</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">Cl</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">原子守恒计算被氧化</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">HCl</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">物质的量；</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt">
                <span style="color1 :#000000; font-family:宋体; font-size:11pt">（</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">2</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">）根据方程式</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">MnO</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:7pt; vertical-align:sub">2</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">+4HCl</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">（浓）</span><img border="0" src="http://5utk.ks5u.com/user/html/html2016/2016-09-29/EUPP7-wchhpvmp-2016929164340.035.jpeg"><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">MnCl</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:7pt; vertical-align:sub">2</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">+C1</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:7pt; vertical-align:sub">2</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">↑+2H</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:7pt; vertical-align:sub">2</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">O</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">计算消耗二氧化锰的质量．</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt">
                <span style="color1 :#000000; font-family:宋体; font-size:11pt">【解答】解：（</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">1</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">）</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">n</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">（</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">C1</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:7pt; vertical-align:sub">2</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">）</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">=</span><img border="0" src="http://5utk.ks5u.com/user/html/html2016/2016-09-29/EUPP7-wchhpvmp-2016929164340.036.jpeg"><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">=0.2mol</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">，被氧化的</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">HCl</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">生成氯气，根据</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">Cl</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">原子守恒，被氧化</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">HCl</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">物质的量</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">=2n</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">（</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">C1</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:7pt; vertical-align:sub">2</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">）</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">=2×0.2mol=0.4mol</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">，</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt">
                <span style="color1 :#000000; font-family:宋体; font-size:11pt">答：被氧化的氯化氢的物质的量为</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">0.4mol</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">；</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt">
                <span style="color1 :#000000; font-family:宋体; font-size:11pt">（</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">2</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">）</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">MnO</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:7pt; vertical-align:sub">2</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">+4HCI</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">（浓）</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">=MnCl</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:7pt; vertical-align:sub">2</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">+C1</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:7pt; vertical-align:sub">2</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">↑+2H</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:7pt; vertical-align:sub">2</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">O</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt">
                <span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">87g</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1mol</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt">
                <span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; m&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0.2mol</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt">
                <span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">m=</span><img border="0" src="http://5utk.ks5u.com/user/html/html2016/2016-09-29/EUPP7-wchhpvmp-2016929164340.037.jpeg"><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">=</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">17.4g</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">，</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt">
                <span style="color1 :#000000; font-family:宋体; font-size:11pt">答：参加反应的</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">MnO</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:7pt; vertical-align:sub">2</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">的质量为</span><span style="color1 :#000000; font-family:'Times New Roman'; font-size:11pt">17.4g</span><span style="color1 :#000000; font-family:宋体; font-size:11pt">．</span>
            </p>
            <p style="font-size:11pt; line-height:150%; margin:0pt">
                <span style="color1 :#000000; font-family:宋体; font-size:11pt">　</span></p>
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        <span class="span_w_w"> 题号:1659243&nbsp; 难度:一般&nbsp; 作者:sjx306100@163.com&nbsp; 更新:09-29</span>
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    <div>已知函数<img alt="www.xiangpi.com" align="absMiddle" itype="png" class="lazy" data-original="http://img.xiangpi.com/Formula/7E97387B2D0B87040D4E1A8807B37FC9.png" style="vertical-align: middle; display: inline;" src="http://img.xiangpi.com/Formula/7E97387B2D0B87040D4E1A8807B37FC9.png">若存在<img alt="www.xiangpi.com" align="absMiddle" itype="gif" class="lazy" data-original="http://img.xiangpi.com/Formula/078A9786C12B973ED1EAEACB84058B60.gif" style="vertical-align: middle; display: inline;" src="http://img.xiangpi.com/Formula/078A9786C12B973ED1EAEACB84058B60.gif">、<img alt="www.xiangpi.com" align="absMiddle" itype="gif" class="lazy" data-original="http://img.xiangpi.com/Formula/474207DD59DAFDDECA7D8B0216AF1ED9.gif" style="vertical-align: middle; display: inline;" src="http://img.xiangpi.com/Formula/474207DD59DAFDDECA7D8B0216AF1ED9.gif">、…、<img alt="www.xiangpi.com" align="absMiddle" itype="png" class="lazy" data-original="http://img.xiangpi.com/Formula/3D412491B622E7ED441A6B6FC812746B.png" style="vertical-align: middle; display: inline;" src="http://img.xiangpi.com/Formula/3D412491B622E7ED441A6B6FC812746B.png">满足<img alt="www.xiangpi.com" align="absMiddle" itype="png" class="lazy" data-original="http://img.xiangpi.com/Formula/EC8CB66D402242A72384D03C762ECB87.png" style="vertical-align: middle; display: inline;" src="http://img.xiangpi.com/Formula/EC8CB66D402242A72384D03C762ECB87.png">,则<img alt="www.xiangpi.com" align="absMiddle" itype="png" class="lazy" data-original="http://img.xiangpi.com/Formula/4D14AEB1ACB2D91BC45FC99A4AA1AB85.png" style="vertical-align: middle; display: inline;" src="http://img.xiangpi.com/Formula/4D14AEB1ACB2D91BC45FC99A4AA1AB85.png">的值为(&nbsp;&nbsp; )
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    A.4<br>B.6<br>C.8<br>D.10
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